RRD graph api

[tlawson]

Hello,
I would like to view RRD graphs on a remote server.

Does Nagios XI have an API? The only solution i have found is rsync the data to the other server

[abrist]

1. If you can access the XI web ui frontend, you could always look at the graphs that way.
2. You could also look at the graph explorer component. There is a fetch_rrd php function that could be snipped and altered.
3. You can access the graphs directly through a url:

For example:

Code: Select all

https://XI_SERVER_IP/nagiosxi/includes/components/perfdata/graphApi.php?host=HOST_IP&service=_HOST_&source=1&view=1&start=&end=&rand=1365528046

Replace XI_SERVER_IP with the address of your nagios server and HOST_IP with the host you want to view. There are also some timeframe parameters that you can pass at the end. If you are curious what the direct urls for your hosts and services are, go into XI --> host or service details --> Click an host/service --> go to the performance graphs tab --> Right click and copy the image url for a graph --> paste it into your browser and you should have the direct url for the graph.

[tlawson]

abrist,
Thank you for your fast responce.

Is there any way to authenticate from URL?

I get "Your session has timed out." if i view it from a computer that is not logged into Nagios XI

[sreinhardt]

Yes using a series of post and get requests it would look similar to:

Client request Server Response
GET nagiosxi/login.php -> nagiosxi/login.php cookie nagiosxi=[string]
GET nagiosxi/ajaxhelper.php... -> param nsp=[string]
POST nagiosxi/login.php &page=auth&debug=&pageopt=login&username=[Nagiosuser]&password=[NagiosPassword]&loginButton=Login

You will request login.php for the initial cookie identified by the string nagiosxi=
After a few automate redirects and requests through pages provided by the server, your browser or script provides the cookie and gets a response including an nsp token.
Finally, you can post to login.php with the additional parameters of:
nsp=[string]
page=auth
debug=
pageopt=login
username=[NagiosUser]
password=[NagiosPassword]
loginButton=Login
Once this post is made successfully, you will only need to pass the nagiosxi cookie id and tag to continue with the same session.

[mguthrie]

@sreinhart: There's an easier way


Yes, you can use the Backend API URl component to fetch a user's backend ticket. So if you added to that URL:

&username=myuser&ticket=knaonj808an

You should be able to fetch the graph that way.

[tlawson]

sreinhardt,
i have been trying your method with curl but i am getting the message "NSP: Sorry Dave, I can't let you do that" on screen.


What am i doing wrong?

[mguthrie]

The auth is failing because the URL is missing an additional session token. Try the backend ticket method and see if that works.